The Clean Cities Blog helps Clean Cities coordinators and stakeholders access information about alternative transportation topics that affect their coalitions around the United States.

A graphic of a cylindrical purple tank with red dots inside to represent natural gas in a CNG vehicle tank.

Filling Up a CNG Vehicle Tank

Sept. 11, 2014

What makes fueling with natural gas different from gasoline?

This photo shows a research engineer with the National Renewable Energy Laboratory as he plugs in a Plug-In Hybrid Electric Vehicle to run a voltage test.

AFDC Station Locator Fuel-Specific Fields

Aug. 20, 2014

What fuel-specific information is available through the Alternative Fuels Data Center's (AFDC) Station Locator website?

A graphic of the map of the United States with the state identified by two capital letters. When you click a state on the map, you're taken to a list of incentives, laws, and regulations for that stat

AFDC Enhancement Makes Finding Applicable Laws and Incentives Easier

July 14, 2014

There are hundreds of laws, incentives, and programs directly related to alternative fuels and vehicles, advanced technologies, and air quality. The newly enhanced Laws and Incentives page on the Alternative Fuels Data Center (AFDC) website now makes it easier to find the handful that are applicable to you, your program, and your stakeholders.

 This photo shows two drivers fueling their vehicles with E85 along the I-75 Clean Fuels Corridor.

I-75 Project Brings Biofuels to one of the Nation’s Longest Highways

July 9, 2014

With the launch of the I-75 Clean Fuels Corridor, drivers in Tennessee, Kentucky, Indiana, Michigan, Georgia, and Florida can fill up their vehicles at stations in the world's longest biofuels corridor. Supported by a 2009 award from the Energy Department's Clean Cities program, the 1,786 mile route includes 26 retail stations selling E85 (an ethanol blend up to 85% that can be used in flexible-fuel vehicles) and 9 stations selling B20 (a 20% biodiesel blend that can be used in diesel vehicles).

This photo shows three students from Rose-Hulman Institute of Technology working under the hood of their car.

Ohio State University Races to the Finish as the Winner of EcoCAR 2

June 24, 2014

For the last three years, teams from 15 colleges across North America have been putting the pedal to the metal designing, building and refining an energy-efficient, consumer-ready alternative fuel vehicle as part of the U.S. Department of Energy's (DOE's) EcoCAR 2 competition. In June, The Ohio State University was crowned the winner of EcoCAR 2: Plugging into the Future.

Photo of a a sign that says "Idle Free Zone"

Idle Reduction

June 13, 2014

Why is idle reduction important? What are ways that I can prevent idling, and what are the benefits of doing so?

Illustration of cartoon image of person with alternative fuel knowledge beside text that says take our quiz to assess your knowledge of alternative fuels, advanced vehicles, and emissions.

What's Your Alternative Fuel IQ?

May 22, 2014

Think you know a thing or two about alternative fuels and advanced vehicles?

Photo of a Mercedes-Benz B Class F- Cell car at a hydrogen filling station

Hydrogen Key Terms

May 20, 2014

What are the key terms to know when discussing hydrogen fuel, fuel cell vehicles, and hydrogen fueling infrastructure?

Photo of a compressed natural gas truck

Emerging Fuels

April 21, 2014

What emerging alternative fuels are under development or are already developed and available in the United States?

Photo of a propane vehicle

Clean Cities Coalitions Acknowledged for Propane Autogas Advocacy

April 2, 2014

Five Clean Cities coalitions recognized with Outstanding Propane Supporter award

Blog Post Topics